Canada has more inland waters and lakes than any other country in the world. It has 31 lakes covering more than 1,300 square kilometres (500 square miles) in area. The largest among these lakes are Great Bear, Great Slave, Dubawnt and Baker. St. Lawrence, Ottawa and Saguenay are some of the great rivers of Canada.
The word ‘vaccine’ is derived from the Latin word vacca meaning cow. A vaccine is prepared from killed microbes or other substances that resemble the activity of the organisms that are known to cause the disease. English physician and scientist Edward Jenner established the system of vaccination. He used the vaccination material extracted from virus of…
Opossums are marsupials, just like kangaroos. The mother carries her young in her pouch. Young opossums are extremely tiny. At birth the young opossums are blind, hairless and practically shapeless. Young opossums are so small that one can put all of the 5 to 18 babies in a tablespoon when they are born.
The first words spoken over the telephone were: ‘Mr Watson, come here, I want to see you.’ Alexander Graham Bell, the inventor of the telephone, was addressing Thomas Watson on 10 March 1876.
Animals living in the extreme cold regions go into hibernation to overcome the cold in winter. Hibernation is different from sleep. The animals do not wake up or move. In autumn the animals eat a lot to build fat in the body. The animals sleep through the cold winters living on the fat stored up…
Dharamshala is Himachal Pradesh’s winter capital from 25 December to 15 February. The village of McLeod Ganj of the Dharamshala Municipality is the home to the Dalai Lama. Dharamshala houses the Central Tibetan Administration and the exiled Tibetan government.
